Question

I’ve an array like this ,i want to strip all alpha characters.

 $testString = Array ([0] => 46_xsdfdsa_ddasdasd [1] => 23423_wrwerwer_ajbfdahbfkahflagassl);
    echo preg_replace("/[^0-9,.]/", "", $testString);

Output should be 46,23423.

I tried above and it did n’t work.

Thanks in-advance

Answer 1

This should work:

echo preg_replace("/[a-zA-Z0-9]/", "", $testString);

FYI, alphanumeric means alpha + numeric characters. From your question title, you seem to suggest that you want to replace them all. Let’s know if this works for you.

---

If in the output you only want numbers, ,., this is what you would do:

echo preg_replace("/[^\d,.]/", "", $testString);

Example:

$str = '23,423_.wrwerwer_ajbfdahbfkahflagassl';
echo preg_replace("/[^\d]/", "", $str); // result: 23,423.

Working Example